<html>
<head>
    <meta charset="UTF-8">
    <title>实验品</title>
</head>
<body>

    <div id = "app-7">
        <p>
            {{ message }}
        </p>
        <input  v-model="message">
    </div>
<script>
    var app7 = new Vue({
        el:'app-7',
        data:{
            message:'hehaha',
        },
    })
</script>
</body>
</html>